用生成式图神经网络实现动态环境下的精准定位与避障
DynoSLAM: Dynamic SLAM with Generative Graph Neural Networks for Real-World Social Navigation

- 将社交感知GNN嵌入因子图优化,建模行人运动的不确定性
- 通过蒙特卡洛采样捕捉多模式行为,提升复杂场景定位精度
- 为下游规划器提供概率安全包络,适合高密度人群导航
传统同时定位与地图构建(SLAM)算法依赖静态环境假设,难以应对包含移动实体(如行人)的真实场景。本文提出DynoSLAM,一种紧耦合的动态图SLAM架构,将社交感知图神经网络(GNN)直接融入因子图优化。不同于使用刚性恒速假设或确定性单智能体神经先验的传统方法,本框架将行人运动预测建模为随机世界模型。通过训练好的GNN进行蒙特卡洛滚动预测,捕获人类交互的多模态认知不确定性,并以动态马氏距离因子将其嵌入SLAM图中。大量仿真实验表明,该随机化方法不仅保持高精度回溯跟踪性能,还有效避免了由确定性“argmax问题”引发的优化失败。最终,提取未来行人状态的经验均值与协方差矩阵,为下游局部规划器提供数学严谨的概率安全包络,实现密集人群环境中的前瞻式、无碰撞机器人导航。
原文摘要 · Abstract (English)
Traditional Simultaneous Localization and Mapping (SLAM) algorithms rely heavily on the static environment assumption, which severely limits their applicability in real-world spaces populated by moving entities, such as pedestrians. In this work, we propose DynoSLAM, a tightly-coupled Dynamic GraphSLAM architecture that integrates socially-aware Graph Neural Networks (GNNs) directly into the factor graph optimization. Unlike conventional approaches that use rigid constant-velocity heuristics or deterministic single-agent neural priors, our framework formulates pedestrian motion forecasting as a stochastic World Model. By utilizing Monte Carlo rollouts from a trained GNN, we capture the multimodal epistemic uncertainty of human interactions and embed it into the SLAM graph via a dynamic Mahalanobis distance factor. We demonstrate through extensive simulated experiments that this stochastic formulation not only maintains highly accurate retrospective tracking but also prevents the optimization failures caused by the deterministic "argmax problem". Ultimately, extracting the empirical mean and covariance matrices of future pedestrian states provides a mathematically rigorous, probabilistic safety envelope for downstream local planners, enabling anticipatory and collision-free robot navigation in densely crowded environments.
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